When all the cheese in Little Falls mysteriously disappears, Watson Mouse is on the case. Following the five easy steps of 'How To Be A Famous Detective' by renowed detective, Marlowe Mouse, Watson picks up clues and trails on his quest to track down the lost cheese, aided by the lovely Miss Whiskers. Watson's pretty sure that he's cracked the case, but one thing's worrying him: what's cousin Louis doing in town? The solution to this particular crime is certainly a big surprise for Watson! Young children will delight in solving the crime themselves, long before Watson does, with the help of the five special envelopes and other detective accessories that feature in this book.